Russian billionaire Yuri Milner has announced a new initiative called Breakthrough Listen, a 10-year project that will search for radio and light signals emitted by extraterrestrials. At a cost of $100 million, it’s the largest sum of money ever allocated to the effort. »7/20/15 6:40pm 7/20/15 6:40pm

We have yet to discover any signs of aliens, a troubling observation that has led to much speculation. One possible solution to the Great Silence is that nobody's out there. It's a conclusion that sounds impossible to believe, but there may be something to it. Here's why we may be alone in the universe. »11/05/14 5:17pm 11/05/14 5:17pm